// 
// Copyright(c) 2009 Syntext, Inc. All Rights Reserved.
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// This file is part of Syntext Serna XML Editor.
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// Alternatively, this file may be used under the terms of the GNU General 
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// Copyright (c) 2004 Syntext Inc.
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#ifndef IDLE_HANDLER_H_
#define IDLE_HANDLER_H_

#include "utils/utils_defs.h"
#include "common/CDList.h"

class UTILS_EXPIMP IdleHandler : public COMMON_NS::CDListItem<IdleHandler> {
public:
    /// Must return "true" when there's some work to do; "false" when finished.
    virtual bool processQuanta() = 0;
    IdleHandler()
        : needReprocessing_(false) {}
    virtual ~IdleHandler();

    static void registerHandler(IdleHandler*);
    static void deregisterHandler(IdleHandler*);
    static void resetIdleTimer();

private:
    friend class IdleProcessManagerImpl;
    bool        needReprocessing_;
};

class QObject;

/// Managed Qt single-shot timer
UTILS_EXPIMP void qt_single_shot_timer(QObject* receiver, 
                                 const char* slot,
                                 int interval = 0);

// Delayed call: func(arg) will be called after the rest of Qt event
// loop had been processed
typedef void (*__delayed_sst_funcp)(void*);

UTILS_EXPIMP void sst_delayed_call(__delayed_sst_funcp, void* arg);

UTILS_EXPIMP void qt_clean_sst();

#endif // IDLE_HANDLER_H_
